The Klementinum offers a little something for everyone: Beautiful views from the astronomical tower; baroque architecture in the library hall and classical musical concerts in the Mirror Chapel. The building dates back to 1232 and is one of the largest building complexes in Europe. It can only be seen via a guided tour which includes visiting the baroque library, meridian hall and the astronomical tower. You can also see a copy of the Vyšehrad Codex, a Latin coronation gospel book, considered the most important and valuable manuscript in Bohemia.